obi: fix InstalledAttribute index collision in obi
obi: fix InstalledAttribute index collision in obi

this fix impacts obi data retrieval performance by adding a secondary hash table lookup.
I'm still trying to figure out a way to solve this performance regression in the general case.

One way could be to let aspect find out the best index that will never collide, which sometimes is just impossible (still unlikely).
But having InstalledAttribute index collision fixed globally could remove some look unseem behavior, makes performance even better.

OpenMicroStep/Aspects,OpenMicroStep/Aspects,OpenMicroStep/Aspects